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This article in AJ

  1. Vol. 58 No. 5, p. 528-531
     
    Received: Mar 12, 1966
    Published: Sept, 1966


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doi:10.2134/agronj1966.00021962005800050023x

Physical Soil Amendments, Soil Compaction, Irrigation, and Wetting Agents in Turfgrass Management II. Effects on Top Growth, Salinity, and Minerals in the Tissue1

  1. N. Valoras,
  2. W. C. Morgan and
  3. J. Letey2

Abstract

Abstract

Better top growth was observed on soils amended with lignified redwood when the set irrigation program was used. Unamended and lignified redwood amended soils allowed less top growth under tensiometer-guided irrigation than the peat and calcined clay amended soil. Good growth on lignified redwood which was subjected to considerable leaching was probably caused by the slow continual release of nutrients. Poor growth on the same growth medium when irrigated by tensiometer records was probably caused by high salinity added with the amendment. All of the amendments contributed to the salinity of the resultant soil mix with lignified redwood causing the greatest salinity, peat and calcined clay having less effect. Except for phosphorus, all of the minerals analyzed for in the tops were affected by several of the treatments. Reasons for the differences observed were usually obscure.

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